Fairchild Semiconductor FM24C32U Datasheet

FM24C32U – 32K-Bit Standard 2-Wire Bus
Interface Serial EEPROM

FM24C32U – 32K-Bit Standard 2-Wire Bus Interface Serial EEPROM

September 2002

General Description

FM24C32U is a 32Kbit CMOS non-volatile serial EEPROM orga­nized as 4K x 8 bit memory. This device confirms to Extended IIC
2-wire protocol that allows accessing of memory in excess of
16Kbit on an IIC bus. This serial communication protocol uses a
Clock signal (SCL) and a Data signal (SDA) to synchronously
clock data between a master (e.g. a microcontroller) and a slave
(EEPROM). FM24C32U is designed to minimize pin count and
simplify PC board layout requirements.

FM24C32U offers hardware write protection where by the upper
half (upper 16Kbit) of the memory array can be write protected by
connecting WP pin to VCC. This section of memory then becomes
unalterable until the WP pin is switched to VSS.

“LZ” and “L” versions of FM24C32U offer very low standby current
making them suitable for low power applications. This device is
offered in both SO and DIP packages.

Fairchild EEPROMs are designed and tested for applications
requiring high endurance, high reliability and low power consump­tion.

Block Diagram

V

SS

V

SDA

CC

WP

WRITE

LOCKOUT

START

STOP

LOGIC

Features

■ Extended operating voltage: 2.7V to 5.5V

■ Up to 400 KHz clock frequency at 2.7V to 5.5V

■ Low power consumption

— 0.2mA active current typical
—10µA standby current typical
—1µA standby current typical (L version)
— 0.1µA standby current typical (LZ version)

■ Schmitt trigger inputs

■ 32 byte page write mode

■ Self timed write cycle (6ms typical)

■ Hardware Write Protection for upper half of the array

■ Low VCC programming lockout for VCC = 5V±10% (“H” option)

— Internal ERASE/WRITE logic is disabled if VCC is below 3.8V

■ Endurance: 1 Million data changes

■ Data Retention: Greater than 40 years

■ Packages: 8-Pin DIP and 8-Pin SO

■ Temperature range

— Commercial: 0°C to +70°C
— Industrial (V): -40°C to +85°C
— Automotive (E): -40°C to +125°C

H.V. GENERATION

TIMING &CONTROL

SCL

A2
A1
A0

© 2001 Fairchild Semiconductor Corporation

FM24C32U Rev. A.1

SLAVE ADDRESS

REGISTER &

COMPARATOR

R/W

CONTROL

LOGIC

WORD
ADDRESS
COUNTER

D

IN

E2PROM

XDEC

CK

1

ARRAY

YDEC

DATA REGISTER

D

OUT

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Connection Diagram

FM24C32U – 32K-Bit Standard 2-Wire Bus Interface Serial EEPROM

Dual-in-Line Package (N) and SO Package (M8)

Pin Names

V

SS

SDA Serial Data I/O

SCL Serial Clock Input

WP Write Protect

V

CC

See Package Number N08E and M08A

Ground

Power Supply

A0

1

A1

2

A2

V

SS

FM24C32U

3

4

V

8

CC

WP

7

SCL

6

SDA

5

FM24C32U Rev. A.1

2

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Ordering Information

FM 24 C XX U F T LZ E XXX Letter Description

FM24C32U – 32K-Bit Standard 2-Wire Bus Interface Serial EEPROM

Package N 8-pin DIP

M8 8-pin SOIC

Temp. Range None 0 to 70°C

V -40 to +125°C
E -40 to +85°C

Voltage Operating Range Blank 4.5V to 5.5V

H 4.5V to 5.5V and V

Lockout
L 2.7V to 5.5V
LZ 2.7V to 5.5V and

<1µA Standby Current

Blank Normal Pin Out
T Rotated Die Pin Out

SCL Clock Frequency Blank 100KHz

F 400KHz

Process U Ultralite Process

Density 32 32K with Write Protect

CC

C CMOS Technology

Interface 24 IIC

FM Fairchild Non-Volatile

Memory

FM24C32U Rev. A.1

3

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Product Specifications

FM24C32U – 32K-Bit Standard 2-Wire Bus Interface Serial EEPROM

Absolute Maximum Ratings

Ambient Storage Temperature –65°C to +150°C

All Input or Output Voltages

with Respect to Ground 6.5V to –0.3V

Lead Temperature

(Soldering, 10 seconds) +300°C

ESD Rating 2000V min.

Operating Conditions

Ambient Operating Temperature

FM24C32U 0°C to +70°C
FM24C32UE -40°C to +85°C
FM24C32UV -40°C to +125°C

Positive Power Supply

FM24C32U/FM24C32UH 4.5V to 5.5V
FM24C32UL 2.7V to 5.5V
FM24C32ULZ 2.7V to 5.5V

Standard VCC (4.5V to 5.5V) DC Electrical Characteristics

Symbol Parameter Test Conditions Limits Units

Min Typ Max

(Note 1)

I

V

V

CCA

I

SB

I

LI

I

LO

V

OL

IL

IH

Active Power Supply f
Current f

Standby Current VIN = GND or V

= 400 KHz 0.2 1.0 mA

SCL

= 100 KHz

SCL

CC

10 50 µA

Input Leakage Current VIN = GND A0, A1, A2, WP 0.1 1 µA

Output Leakage Current V

to V

OUT

CC

SCL 0.5 2 µA

= GND to V

CC

0.1 1 µA

Input Low Voltage –0.3 VCC x 0.3 V

Input High Voltage VCC x 0.7 VCC + 0.5 V

Output Low Voltage I

= 3 mA 0.4 V

OL

Low VCC (2.7V to 5 .5V) DC Electrical Characteristics

Symbol Parameter Test Conditions Limits Units

Min Typ Max

(Note 1)

I

CCA

I

SB

(Note 3) or V

I

LI

I

LO

V

IL

V

IH

V

OL

Capacitance T

Symbol Test Conditions Max Units

C

I/O

C

IN

Note 1: Typical values are TA = 25°C and nominal supply voltage (5V).

Note 2: This parameter is periodically sampled and not 100% tested.

Note 3: The "L" and "LZ" versions can be operated in the 2.7V to 5.5V VCC range. However the ISB values for L and LZ are applicable only when VCC is in the 2.7V to 4.5V range.

Active Power Supply Current f

= 400 KHz 0.2 1.0 mA

SCL

f

= 100 KHz

SCL

Standby Current VIN = GND VCC = 2.7V - 4.5V (L) 1 10 µA

CC

VCC = 2.7V - 4.5V (LZ) 0.1 1 µA
VCC = 4.5V - 5.5V 10 50 µA

Input Leakage Current VIN = GND A0, A1, A2, WP 0.1 1 µA

to V

CC

Output Leakage Current V

= GND to V

OUT

Input Low Voltage –0.3 V

SCL 0.5 2 µA

CC

0.1 1 µA

x 0.3 V

CC

Input High Voltage VCC x 0.7 VCC + 0.5 V

Output Low Voltage IOL = 3 mA 0.4 V

= +25°C, f = 100/400 KHz, VCC = 5V (Note 2)

A

Input/Output Capacitance (SDA) V

= 0V 8 pF

I/O

Input Capacitance (A0, A1, A2, SCL) VIN = 0V 6 pF

FM24C32U Rev. A.1

4

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